<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      v-model.trim="content"
      @keyup.enter="addOne"
    />
  </div>
</template>

<script>
export default {
  name: "HeaderComponent",
  data() {
    return {
      content: '',
    };
  },
  props: ["todos",'addTodo'],
  methods: {
    // 添加一条todo
    addOne() {
      // 判断添加的内容是否为空
      if (this.content) {
        const result = this.todos.some((item) => item.content === this.content);
        // 判断添加的内容是否已存在
        if (!result) {
          const todo = { id: Date.now(), content: this.content, isOver: false };
          this.addTodo(todo)
        }else{
          alert('添加失败  todo名重复了')
        }
      }
      this.content = ''
    },
  },
};
</script>

<style scoped>
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>
